Regulations Governing Forcible Deportation for Nationals without Household Registration in the Taiwan Area Article 12

Nationals without household registration are held fully responsible for the cost of the airplane or ship tickets derived from the forcible deportation. For those who are unable to afford transportation cost without a doubt, the costs will be disbursed from the planned budget by the Agency.
中文原文 臺灣地區無戶籍國民強制出國處理辦法第12條
依法強制出國之無戶籍國民出國之機(船)票費,由其自行負擔;確無力支付者,由移民署編列預算支付。

English translation for reference only; the Chinese text prevails. Not legal advice.